Mature Slippery - Tube

: The end walls of these cells are perforated, resembling a sieve. These "sieve plates" allow cytoplasm to connect from one cell to the next.

: Mature tubes in the female reproductive system that are approximately 11–12 cm long. They contain cervical fluid that becomes "slippery and stretchy" during fertile periods to help sperm move toward the egg. mature slippery tube

: Lubricated by a clear, slippery fluid produced by the bulbourethral glands (Cowper's glands) to protect and ease the passage of fluids. : The end walls of these cells are